답안 #524022

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
524022	2022-02-08T14:31:15 Z	boykut	Bomb (IZhO17_bomb)	C++14	27 / 100	1000 ms	55408 KB

bomb

#include <bits/stdc++.h>

using namespace std;

const int N = 2500;
int arr[N][N];
int pref[N][N];

int main() {
	ios::sync_with_stdio(0);
	cin.tie(0);

	int n, m;
	cin >> n >> m;
	for (int i = 0; i < n; i++) {
		for (int j = 0; j < m; j++) {
			char x; cin >> x;
			arr[i][j] = x - '0';
			pref[i][j] = x - '0';
			pref[i][j] += (i ? pref[i - 1][j] : 0);
			pref[i][j] += (j ? pref[i][j - 1] : 0);
			pref[i][j] -= (i && j ? pref[i - 1][j - 1] : 0);
		}
	}

	auto get = [&](int a, int b, int c, int d) ->int {
		int s = pref[c][d];
		s -= (a ? pref[a - 1][d] : 0);
		s -= (b ? pref[c][b - 1] : 0);
		s += (a && b ? pref[a - 1][b - 1] : 0);
		return s;
	};

	// brute force
	int ans = 0, Q = 2;
	for (int a = 1; a <= n; a++) {
		for (int b = 1; b <= m; b++) {
			for (int i = 0; i + a - 1 < n; i++) {
				for (int j = 0; j + b - 1 < m; j++) {
					int g = get(i, j, i + a - 1, j + b - 1);
					if (g == a * b) {
						for (int i2 = i; i2 <= i + a - 1; i2++) {
							for (int j2 = j; j2 <= j + b - 1; j2++)
								arr[i2][j2] = Q;
						}
					}
				}
			}
			int ok = 1;
			for (int i = 0; i < n; i++) {
				for (int j = 0; j < m; j++) {
					if (arr[i][j] != 0 && arr[i][j] != Q) ok = 0;
				}
			}
			if (ok) {
				ans = max(ans, a * b);
			}
			Q++;
		}
	}
	cout << ans << '\n';

	return 0;
}

Subtask #1

27.0 / 100.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	204 KB	Output is correct
2	Correct	1 ms	448 KB	Output is correct
3	Execution timed out	1055 ms	20280 KB	Time limit exceeded
4	Correct	353 ms	20280 KB	Output is correct
5	Correct	47 ms	312 KB	Output is correct
6	Correct	37 ms	332 KB	Output is correct
7	Correct	1 ms	320 KB	Output is correct
8	Correct	1 ms	460 KB	Output is correct
9	Correct	1 ms	460 KB	Output is correct
10	Correct	1 ms	332 KB	Output is correct
11	Correct	1 ms	460 KB	Output is correct
12	Correct	1 ms	332 KB	Output is correct
13	Correct	0 ms	332 KB	Output is correct
14	Correct	1 ms	332 KB	Output is correct
15	Correct	1 ms	448 KB	Output is correct
16	Correct	1 ms	460 KB	Output is correct
17	Correct	47 ms	844 KB	Output is correct
18	Correct	29 ms	844 KB	Output is correct
19	Correct	76 ms	1128 KB	Output is correct
20	Correct	84 ms	1100 KB	Output is correct
21	Correct	29 ms	716 KB	Output is correct
22	Correct	71 ms	1092 KB	Output is correct
23	Correct	155 ms	1200 KB	Output is correct
24	Correct	54 ms	1000 KB	Output is correct
25	Correct	215 ms	1100 KB	Output is correct
26	Execution timed out	1083 ms	1100 KB	Time limit exceeded
27	Execution timed out	1091 ms	3268 KB	Time limit exceeded
28	Execution timed out	1063 ms	3532 KB	Time limit exceeded
29	Execution timed out	1026 ms	4468 KB	Time limit exceeded
30	Execution timed out	1064 ms	5316 KB	Time limit exceeded
31	Execution timed out	1070 ms	4292 KB	Time limit exceeded
32	Execution timed out	1071 ms	4940 KB	Time limit exceeded
33	Execution timed out	1047 ms	5572 KB	Time limit exceeded
34	Execution timed out	1092 ms	3764 KB	Time limit exceeded
35	Execution timed out	1084 ms	5648 KB	Time limit exceeded
36	Execution timed out	1076 ms	5668 KB	Time limit exceeded
37	Correct	1 ms	460 KB	Output is correct
38	Execution timed out	1092 ms	55280 KB	Time limit exceeded
39	Correct	1 ms	460 KB	Output is correct
40	Execution timed out	1050 ms	14024 KB	Time limit exceeded
41	Correct	1 ms	452 KB	Output is correct
42	Execution timed out	1075 ms	1096 KB	Time limit exceeded
43	Execution timed out	1089 ms	55268 KB	Time limit exceeded
44	Execution timed out	1033 ms	5572 KB	Time limit exceeded
45	Execution timed out	1008 ms	55276 KB	Time limit exceeded
46	Execution timed out	1029 ms	55248 KB	Time limit exceeded
47	Execution timed out	1094 ms	55304 KB	Time limit exceeded
48	Execution timed out	1006 ms	55280 KB	Time limit exceeded
49	Execution timed out	1028 ms	55292 KB	Time limit exceeded
50	Execution timed out	1010 ms	55308 KB	Time limit exceeded
51	Execution timed out	1058 ms	55364 KB	Time limit exceeded
52	Execution timed out	1062 ms	55344 KB	Time limit exceeded
53	Execution timed out	1047 ms	55280 KB	Time limit exceeded
54	Execution timed out	1006 ms	55236 KB	Time limit exceeded
55	Execution timed out	1040 ms	55364 KB	Time limit exceeded
56	Execution timed out	1081 ms	55280 KB	Time limit exceeded
57	Execution timed out	1067 ms	55292 KB	Time limit exceeded
58	Execution timed out	1025 ms	55236 KB	Time limit exceeded
59	Execution timed out	1049 ms	55408 KB	Time limit exceeded
60	Execution timed out	1084 ms	55224 KB	Time limit exceeded
61	Execution timed out	1082 ms	55284 KB	Time limit exceeded
62	Execution timed out	1042 ms	55312 KB	Time limit exceeded
63	Execution timed out	1045 ms	55296 KB	Time limit exceeded
64	Execution timed out	1075 ms	55240 KB	Time limit exceeded
65	Execution timed out	1100 ms	55272 KB	Time limit exceeded
66	Execution timed out	1006 ms	55244 KB	Time limit exceeded
67	Execution timed out	1047 ms	55240 KB	Time limit exceeded
68	Execution timed out	1105 ms	55312 KB	Time limit exceeded
69	Execution timed out	1103 ms	55324 KB	Time limit exceeded
70	Execution timed out	1072 ms	43348 KB	Time limit exceeded
71	Execution timed out	1010 ms	55220 KB	Time limit exceeded
72	Execution timed out	1010 ms	55288 KB	Time limit exceeded
73	Execution timed out	1032 ms	55300 KB	Time limit exceeded
74	Execution timed out	1027 ms	55292 KB	Time limit exceeded
75	Execution timed out	1055 ms	55236 KB	Time limit exceeded
76	Execution timed out	1004 ms	55272 KB	Time limit exceeded
77	Execution timed out	1088 ms	55320 KB	Time limit exceeded
78	Execution timed out	1100 ms	55280 KB	Time limit exceeded
79	Execution timed out	1016 ms	55320 KB	Time limit exceeded
80	Execution timed out	1040 ms	55272 KB	Time limit exceeded
81	Execution timed out	1084 ms	55276 KB	Time limit exceeded
82	Execution timed out	1014 ms	55316 KB	Time limit exceeded
83	Execution timed out	1025 ms	55204 KB	Time limit exceeded
84	Execution timed out	1037 ms	55236 KB	Time limit exceeded
85	Execution timed out	1101 ms	55316 KB	Time limit exceeded
86	Execution timed out	1008 ms	55308 KB	Time limit exceeded
87	Execution timed out	1100 ms	55232 KB	Time limit exceeded
88	Execution timed out	1051 ms	55208 KB	Time limit exceeded
89	Execution timed out	1037 ms	55284 KB	Time limit exceeded
90	Execution timed out	1025 ms	43324 KB	Time limit exceeded
91	Execution timed out	1027 ms	55224 KB	Time limit exceeded
92	Execution timed out	1099 ms	55324 KB	Time limit exceeded
93	Execution timed out	1101 ms	55292 KB	Time limit exceeded
94	Execution timed out	1032 ms	55252 KB	Time limit exceeded
95	Execution timed out	1008 ms	55280 KB	Time limit exceeded
96	Execution timed out	1033 ms	55204 KB	Time limit exceeded
97	Execution timed out	1105 ms	55400 KB	Time limit exceeded
98	Execution timed out	1016 ms	55252 KB	Time limit exceeded
99	Execution timed out	1071 ms	55264 KB	Time limit exceeded
100	Execution timed out	1058 ms	55208 KB	Time limit exceeded